Folder for sewing machines



July 25, 1933. P. E. HAVEL 1,919,942

FOLDER FOR SEWING MACHINES Filed June 15, 1951 2 Sheets-Sheet 1 July 25, 1933. P. E. HAVEL FOLDER FOR SEWING MACHINES Fileddune 15, 1931 2 Sheets-Sheet 2 54 a9 mrenizi Pazzfl az/ 7 lg j "T N 99y atented ;July 25,1iee-3 v '15 vide 1aiolder of this PAULJVE. HAVE or 011 mm; mine-is,

V assmnon Fro snonsn 1.1 sonnvz n nnn EnIvIAN coLnwYm o'rn on cHIcAeo i L noIs, cogran'rivnns neine BUSINESS; AS GOLDWY n'n'nozrnnns A i 7 ronnnnron SEWING lwncnrnns Applicationfiled time s,

This invention relates to improveinentin foldersfor sewing machines and itconsists v of the matters hereinafter describedand more particularly pointed- ;out in 'the, jap- -Apendedclai1ns.,

The primary-object olf-;.'th invention -to provider-a folder jot this kind, especially 1 adaptedfor folding over marginal parts of relativelyiheav'y material" such as burlap 10 bagging and the l1kewhereby said margins i laterally from one endof this elevation or platform, .isv an angularly disposed flange thatterininates at the ,f rontfedge of said member. This flange is transversely curved may be stitched'to' provide a strong and neat appearing ,se&1n,:freeiro1n 'frayings andlravelings.,- x. a

Another-objectof the invention is to proparts coacting to provide a rearwardly tapering conical :;channel,' one Y of which parts r is -so mountedwith respect to the other as to yi'e'ld perpendicularly to pern iitithe free passage "of the: more bulky portionsvofthe material-.ied therethrough for folding prior to overcast1ng=%the same inproduclng a finishedsean f H1 a V 1' Tl1eS Ob] 60i'JS"O f the nvention aswell as "others, together vvithfthe advantages there of will'inorefully appear 'asI proceed'with h n'ieln-b eriis provided at the bottom with a ,groove part forming a continuation of the -=-m specification. 1 p, @In the 'drawrngsz- 5 of ase'vving inachi-nei: Fig. 2 is a horizontal sectional-view ,through the same astaken on the l ne 2+2 o'f.Fig.j1.. g g Fig. is aview in front elevat on oftllefl i Zdownward-movement;

folder view through the same as takenr'on the line 4 eeiior Figs-e 1 viewjthrough the inarginaljsealn of abur after-the same has co'een-fturned and before the same has been A lap bag inside 5 out operated c upon by a equipped iWithImyQi'JnprOYed; folder'r;

' sewing machine 5 Fig, .7 is a ivie vsiinilan 'to Figg 'fig but kind which includes conical groove,} open at the top.-

4: is alongitudinal 'verticalasectional 1931-. seri l No. 544370;

after-said sealn hasnbeen operated upon asewin machine equi p d with mylninr "P d fOlder, r w, i a a In}. general, my; improved folder eomprises as member positioned on-the base of the sewing machine in advance-of the usual needle and presser foot and a p0rtion;-of

said member is formed to provide an ele-T ,vatlon :orplatforin with a downwardly and rearwardl inclined top surface. Spaced as it approaches the said elevation, or plat form and coacts with the, associatedcnd' thereojfto provide a irearwardly tapering,

Secured; on, said. member adjacent the flange-is arr upstanding;bracket, a part of which overhangs but is-spaced above the as-' sociated 1 groove:v above mentionedQo This w =.bracket is providedabove said groove w-ithm a downwardly opening recess in lwhich a block like member "has-a vertically-guidedsliding, bearing and a part of'thisxblock V first; mentioned groove to complete'the firearswardly tapering, conical channel'of the folde12; Said block 'niembercarries' a guide'rod,

that slides'in said overhanging bracket'and a spring, surrounds said rod tojnorniall'yurge said block like member-downwardly; the block nieinberwand bracl'zet,havingv'lneeting partsathat provide astop'to' limit such Referring now I in detail to that enib'odi- "ment of the invention illustrated in the ac- .is niounted a perpendicular bar 3'carr-ying the usual pressen lever Sbyun'eans of bar may-be raised, and lowered out of usualfeed plate (notshown) projecting up into operative positiouwith respect to the "coinpanying drawings: 1 indicates as a;

'wvhole-the base ofgan industrialsewing Ina-g chineand 2 lndicates an end p'art' of the efoverhanglng arm of. said machlne in :WlHCh' through the-base. In tlie said end of said ciprocation, the usual needle-bar 6}carryii1g a needle 7 at its bottom end and associated with said needle and'eXtending-up through,

said base in advance of and to oneside' of the perpendicular plane of the needle is a loop caster 8. 3 .7 g is The parts above describedare all well .lmown in industrialsewing machines: such as are used in burlap bag renovating and like establishments, operating upon relativelyheavy material. a

er which as shown herein includes a somea what rectangular plate member resting on i the base lofthe sewingmachine and having a depending flange 10at the frontby which said plate member is secured in place to the.

sewing machine baseby screws 11., About midway between-its ends there is provided onsaid plate inember,'an'upright flange 12 f that divides the plate inember into, what 7 may, lee-termed for convenience infutiire reference, as left and right handpartsor halves 1'3 andl respectively, 'theright'hand i part or half being of a lesser depthfrom front to real, than the left hand part. It is here pointed out thatgthe flange 12 is-inl6 as bestshown in Fig. '1. This elevation with respect to the flange 12 andsaid'end of said platform or elevation is curved as at 17 to merge into the associated curved side of at its top end. In

bearing therein is a block like member 22 the flange l2 andcoacttherewithlin'provide' groove 18 open atthe topasshown in Fig. 3. The axis of short distance to i-ng a 'rearwardly vtapering this gro'oveis disposed a the right hand side ofthe perpendicular axial plane ofthe needle bar 6;

the plate member 9, adjacent the flange 12,

is an upright bracketlt)whavinga boss 20 v g the bottom end ofasaid" boss is provideda downwardly ifacing openfv ing 21 extending from 'front'to-rear; Ar? ranged in said open ng for a sliding guided and-in one side ofsaid opening isprovided anuprightrib' or flange 231 for'engagemeiit dint?) .t 't p 6nd of the block inember22 in a: groove 24 in one sideofsaidbloek menitop end part ofa'guide rod or'stem'26and the bottom end thereof is screwf'thread'ed parts of'the a Fiat-,3. is 9 indicates as a wholemy improved fold- *flange like 1 at its frontendy r to theright as "end the left hand 7 p p u I 1 the character and 7 Detachably secured to and rising from the rear marg n ofthe right hand part 14: of"

er' as best shownindotted-lines in Fig. 4. In the top'end ofjsaid boss isthreadeda tubular bushing25 through, which slides the 5 An expansion spring 27 surrounds the stem overhanging arm, there is mounted for re dllGIHbSll downwardly and arecess is provided in the top end of said member to ac "commodate the bottom end of the spring.

Tofresist the rearward thrust on the block 'likemember, as the material is fed rearwardly throughthejfolder as will later appear, it is provided at .the front,upon opposite sides with flanges 2 8 that engage coacting bracket 19 as best appears in,

In the bottom part of said block like member-is formed adownwardly. and rearwardly extending and taperinggroove 29. that coacts With'the groove part 18 before mentioned in providing a rearwardly tapering channel indicated as awhole by the numeral 30 in Fig. 4. j At its bottom end and on that side of said block-member that overhangs :the associated end of the elevation or plat provided a laterally extending ,i'3l that' is turned upwardly form 15 is As best shown in a 1n .place upouthe base ofan industrlal sewingmachine, the axial plane ofthe chantablishments. the used bags are first cleaned V I and this is doneundera high vacuum and terminates at onev end in spaced relation at the sametime the bags are turned" inside out; This exposes an indeed frayed and fraveled margin outsidethe originaliline of stitchingalong one" side and end of'the bag.

Fig. when the folder r'nel 30is disnosed slightly to one side, (the V clined rearwardly toward the left and its frontend takeson a curve This line of 'stitching'follows about one side 1 and the bottom oftlie bag in the manner well known and inwardly of said line of stitching, the edge portions of said margins are more or jless-frayedandraveled due to.

relatively loose weave of the bagging. .q

Again, said original line of stitching is a not always straight and true so that these marginsare often irregular as to width'and theainount of fabric they contain. a c a In operating upon a bag for the resewing thereof, the operator brings that" marginal part'of the bagat its open en'd into position against the front-end of the flange 12 and ,;-moves "it rearwardly so "that said frayed margins are caused to enter the'channel 30,

{with the sidewalls ofth'ebag, passing under the lip 31 of the block'like member 22. This lifts theblock likeamember 22 against the action of the spring27 and in effect provides a slot that opens'laterally into said channel.

The operator moves said end of the bag rearqwardly-and lowers the presser foot 4 to enfed inisa'idg-overhanging par -01- movement toward. and away \floiiij said: groove and formed on its bottoniw th a surface; to. ooact with said groove in pi'ovidingga rearwardly' taperlng con cal 1 channel, n eansi norn allyt urging said block like member. toward said '7 groove and I; a elipv like *inember extending I lateral'ly fro n *saidt block like member l and-f 'o verhanging' 'form. v

4-. In folder of plate- 'Iike nmmbeI includingalzplatform 'roovebracket; risinmfroln said late nieniberand inlnding'i a, boss: overhanging SiLlOi groov fla vblock l ke member mounted 7 for guided :niove nent in; saidflbralcket "to ward and away fronisaid groove andlwhich -niemberwis. "formed on itsssbottoni to-"Comt w-ith said groove in completing;afrearward-f lyWaperingonibai channeL'fla guide-stem seoured in said block like; inelnbernanc tending up through said xboss and fa spring surrounding a part? of said: steiniand 'so engaging the, block:likemembertto. urge the same downwardly toward said 'groovel'z,

surface, lneansmoaotingjwith one Q end of 'said platform} .111; providlngwan 'open top :egroove;

and

groove, a "block like member mounted" for guided movement in saidbracket :"toward and away from saidgroove and; 'WhIGhIfli-BIH- her is formedon its bottomfy-to coaot iwith 1 41 said groove in J completing; a i 'l i y ataper'ingconioalehann'el, fa gnidestems [floured 1n said block likeinember and extend- .:ingup through said bossfand spring' surf i roundinga partof said? StemTandaSO-engag- 'ing.-' the block *lik'e memberjas ztol nrge they;

same-downwa 'dly toward saidg roove, said fblQGk; 11k6 Hlemb8I' and bra'ohethaving en-.

ggaging' parts to resist a pressureiiri theidi rectionof tlel'engthof the channel. '0.

'6, a folder I of the ikind 'deserihed, Q

"plate dike.-niember including a platform with arearwfzirdlyflnd downwardly inelined top surface, means coacting with one "end' of, said platform in rprov dlng any open top he associated-end of plat- 1 lplatfo fihracket Tisingfromgsfid late 'niember, and iin'cii ding a boss overhanging said-groove, block; 5 like Illflll'lbel'i mounted for 'sguided movenient in sziidbraCket toward landaway v groove and V which member is ,forlned oli its :bottornfl tocoact vwith said 1 v5. In a folder Q -"Ith:ef.'kind described, plate like'lneniher inoludingiaplatform'iwith 1a} rearwardly land ,downwardlyjinclinedfltop'j ;;conioal channel; niounted in -said. boss, a guide stem. secured in saidblocklikesme nberand having a slid- ,iiigengageinent in said 1! a: bracket rising from said plate-like member} includingi a ,b'oss ,overlianging *said 1y tapering conicaljehannel, a guide stemsemember and including-a boss overhanging saidhgrooye, agblook like member mounted for guided movement ,in said bracket toward and away; from said, groove and which i i n1e nher is formed on its bottoineto" coact [with said groove in c'ompleting a rearwarding'fthe, block-like member as to urge the isalnefdown ardlytoward said groove, said block like? member inoluding a laterally ex itendi'ng lip likefiange along-one side at the rbottoniwhieh; overhangs-theassociated end oftthefplatform}- I In'ja wfoldenofitlie kind described; a

ffplateliken e nber inoluding a platform with rarearw'aTdIy'and downwardly inclined top suriace', means ooacting with one endof said rm in: providing ail-open top groove, a

bushing. and a spring surrounding said rodfbetw een' said block likememberand' bushing and normally urgging said blook "like member down-toward .saldgroove TV n Y :8; Ineombmation with asewing machine 'iii'olilding a base,;a presserfoot and a recip rooatingfnedlei bar, a; member mounted on saidlbase tor-the front of thei needle bar forining aip'latforin witha top surfaoe hav ingian openjtop grooye near one end thereof, ineans fixed wlth respect to said end of 1y spaced guide surfaoes spaced above said 5 groove and nieansf mounted for a yielding Silld, surfaces g1iid ed engagmntf=with I toward and away from "SELld groove and hanneL 5 HAVEL. s

IInem ber and providing a pair of lateral- Q 

